What new elements are hidden in calligraphy in the late Western Zhou Dynasty?

Calligraphy in the late Western Zhou Dynasty still contains new elements different from the past, which makes the calligraphy in this period present a unique look. This new element can be summarized in two ways: one is change and the other is decline. Change is a rebellion against the slightly simple middle-term calligraphy; The decline is related to the expansion of local vassal forces and the decline of dynasties. Changes began in the era of Li Wang; The fading factor was latent and broke out suddenly after Wang Xuan Zhongxing.